arch/arc/include/asm/uaccess.h:592:33: sparse: sparse: incorrect type in initializer (different address spaces)

arch/arc/include/asm/uaccess.h:592:33: sparse: sparse: incorrect type in initializer (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6f3ed7fec72fc8979b2a8c7219c0a9fcfc8d07b5
commit: 9eb22f7fedfc9eb1b7f431a5359abd4d15b0b0cd fs: add ioctl to query metadata and protection info capabilities
date:   11 months ago
config: arc-randconfig-r113-20260602 (https://download.01.org/0day-ci/archive/20260602/202606022029.i60LMcVJ-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 15.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260602/202606022029.i60LMcVJ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 9eb22f7fedfc ("fs: add ioctl to query metadata and protection info capabilities")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606022029.i60LMcVJ-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   block/blk-integrity.c: note: in included file (through include/linux/uaccess.h, include/linux/sched/task.h, include/linux/sched/signal.h, include/linux/rcuwait.h, ...):
>> arch/arc/include/asm/uaccess.h:592:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned char *d_char @@     got void [noderef] __user *to @@
   arch/arc/include/asm/uaccess.h:592:33: sparse:     expected unsigned char *d_char
   arch/arc/include/asm/uaccess.h:592:33: sparse:     got void [noderef] __user *to

vim +592 arch/arc/include/asm/uaccess.h

43697cb0973da1 Vineet Gupta 2013-01-18  588  
80bfe134f0306a Vineet Gupta 2021-08-13  589  static inline unsigned long __clear_user(void __user *to, unsigned long n)
43697cb0973da1 Vineet Gupta 2013-01-18  590  {
43697cb0973da1 Vineet Gupta 2013-01-18  591  	long res = n;
43697cb0973da1 Vineet Gupta 2013-01-18 @592  	unsigned char *d_char = to;
43697cb0973da1 Vineet Gupta 2013-01-18  593  
43697cb0973da1 Vineet Gupta 2013-01-18  594  	__asm__ __volatile__(
43697cb0973da1 Vineet Gupta 2013-01-18  595  	"	bbit0   %0, 0, 1f		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  596  	"75:	stb.ab  %2, [%0,1]		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  597  	"	sub %1, %1, 1			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  598  	"1:	bbit0   %0, 1, 2f		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  599  	"76:	stw.ab  %2, [%0,2]		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  600  	"	sub %1, %1, 2			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  601  	"2:	asr.f   lp_count, %1, 2		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  602  	"	lpnz    3f			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  603  	"77:	st.ab   %2, [%0,4]		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  604  	"	sub %1, %1, 4			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  605  	"3:	bbit0   %1, 1, 4f		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  606  	"78:	stw.ab  %2, [%0,2]		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  607  	"	sub %1, %1, 2			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  608  	"4:	bbit0   %1, 0, 5f		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  609  	"79:	stb.ab  %2, [%0,1]		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  610  	"	sub %1, %1, 1			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  611  	"5:					\n"
43697cb0973da1 Vineet Gupta 2013-01-18  612  	"	.section .fixup, \"ax\"		\n"
43697cb0973da1 Vineet Gupta 2013-01-18  613  	"	.align 4			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  614  	"3:	j   5b				\n"
43697cb0973da1 Vineet Gupta 2013-01-18  615  	"	.previous			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  616  	"	.section __ex_table, \"a\"	\n"
43697cb0973da1 Vineet Gupta 2013-01-18  617  	"	.align 4			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  618  	"	.word   75b, 3b			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  619  	"	.word   76b, 3b			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  620  	"	.word   77b, 3b			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  621  	"	.word   78b, 3b			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  622  	"	.word   79b, 3b			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  623  	"	.previous			\n"
43697cb0973da1 Vineet Gupta 2013-01-18  624  	: "+r"(d_char), "+r"(res)
43697cb0973da1 Vineet Gupta 2013-01-18  625  	: "i"(0)
d5e3c55e01d8b1 Vineet Gupta 2019-02-05  626  	: "lp_count", "memory");
43697cb0973da1 Vineet Gupta 2013-01-18  627  
43697cb0973da1 Vineet Gupta 2013-01-18  628  	return res;
43697cb0973da1 Vineet Gupta 2013-01-18  629  }
43697cb0973da1 Vineet Gupta 2013-01-18  630  

:::::: The code at line 592 was first introduced by commit
:::::: 43697cb0973da144156e7d11ddd035aee226ee30 ARC: uaccess friends

:::::: TO: Vineet Gupta <vgupta@synopsys.com>
:::::: CC: Vineet Gupta <vgupta@synopsys.com>

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